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Benefit Plans - Additional Information (Details) $ in Millions		3 Months Ended		6 Months Ended
	Jul. 11, 2019 USD ($)	Jun. 30, 2019 USD ($)	Jun. 30, 2018 USD ($) arrangement	Jun. 30, 2019 USD ($)
U.S. Plans | Multiemployer Plans, Pension | Fund | BCTGM
Defined Benefit Plan Disclosure [Line Items]
Multiemployer plan, number of expired collective-bargaining arrangements | arrangement			8
U.S. Plans | Multiemployer Plans, Pension | Fund | BCTGM | North America
Defined Benefit Plan Disclosure [Line Items]
Multiemployer plan, withdrawal liability		$ 396		$ 396
Pension Plans | U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Employer contribution				4
Estimated future employer contributions		1		1
Pension Plans | Non-U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Employer contribution				131
Estimated future employer contributions		101		101
Pension Plans | Non-U.S. Plans | United Kingdom and Ireland
Defined Benefit Plan Disclosure [Line Items]
Employer contribution				74
Subsequent Event | U.S. Plans | Multiemployer Plans, Pension | Fund | BCTGM | North America
Defined Benefit Plan Disclosure [Line Items]
Multiemployer plan, withdrawal liability	$ 526
Multiemployer plan, withdrawal obligation term	20 years
Other current liabilities | U.S. Plans | Multiemployer Plans, Pension | Fund | BCTGM | North America
Defined Benefit Plan Disclosure [Line Items]
Multiemployer plan, withdrawal liability		22		22
Long-term other liabilities | U.S. Plans | Multiemployer Plans, Pension | Fund | BCTGM | North America
Defined Benefit Plan Disclosure [Line Items]
Multiemployer plan, withdrawal liability		374		$ 374
Selling, general and administrative expenses | U.S. Plans | Multiemployer Plans, Pension | Fund | BCTGM | North America
Defined Benefit Plan Disclosure [Line Items]
Multiemployer plan, period (credit) charge for withdrawal obligation		(35)	$ 408
Multiemployer plan, period (credit) charge for withdrawal obligation, net of tax		$ (26)	$ 305

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